Tus nqi thib kaum yog dab tsi?
Tus nqi thib kaum yog dab tsi?

Video: Tus nqi thib kaum yog dab tsi?

Video: Tus nqi thib kaum yog dab tsi?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
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Kev txhais ntawm Kaum - tus nqi txheej

Kaum - tus nqi txheej los yog "TVL" txhais tau hais tias lub thickness ntawm ib tug tshwj xeeb cov ntaub ntawv uas attenuates x-radiation los yog gamma hluav taws xob rau ib tug npaum li cas ntawm cov huab cua kerma tus nqi, raug tus nqi, los yog absorbed koob tshuaj txo mus rau ib tug. thib kaum ntawm tus nqi ntsuas yam tsis muaj cov khoom ntawm tib lub ntsiab lus

Kuj paub, HVL suav li cas?

Txiav txim siab qhov attenuation coefficient ntawm cov khoom. Qhov no tuaj yeem pom hauv lub rooj ntawm attenuation coefficient lossis los ntawm cov chaw tsim khoom ntawm cov khoom. Faib 0.693 los ntawm attenuation coefficient los txiav txim qhov HVL . Ib nrab nqi txheej qauv yog HVL = = 0,693/Μ.

Ib nrab nqi txheej txhais li cas? Ib cov ntaub ntawv ib nrab - tus nqi txheej ( HVL ), los yog ib nrab - tus nqi tuab, yog cov thickness ntawm cov khoom uas qhov kev siv ntawm hluav taws xob nkag mus rau nws yog txo los ntawm ib tug ib nrab.

Yog li ntawd, vim li cas ib nrab nqi txheej tseem ceeb?

Ib nrab nqi txheej . HVL yog ib tseem ceeb Kev tswj xyuas zoo raws li nws yog siv los ntsuas seb puas muaj kev pom txaus hauv lub x-ray beam kom tshem tawm cov hluav taws xob tsawg, uas tuaj yeem ua rau puas tsuaj. Nws tseem yuav pab txiav txim seb hom thiab thickness ntawm shielding xav tau nyob rau hauv qhov chaw.

HVL yog dab tsi hauv hluav taws xob?

Ib nrab nqi txheej ( HVL ) yog qhov dav ntawm cov khoom yuav tsum tau txo cov cua kerma ntawm ib qho x-ray los yog gamma-ray mus rau ib nrab ntawm nws tus nqi qub. Qhov no siv rau nqaim beam geometry nkaus xwb raws li broad-beam geometry yuav muaj kev cuam tshuam loj heev, uas yuav ua rau qis qis qis ntawm qhov attenuation. HVL = 0.693 / Μ

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